EN JA
AIO_RETURN(2)
AIO_RETURN(2) FreeBSD System Calls Manual AIO_RETURN(2)

NAME

aio_returnretrieve return status of asynchronous I/O operation (REALTIME)

LIBRARY

Standard C Library (libc, -lc)

SYNOPSIS

#include < aio.h>

int
aio_return( struct aiocb *iocb);

DESCRIPTION

The aio_return() system call returns the final status of the asynchronous I/O request associated with the structure pointed to by iocb.

The aio_return() system call should only be called once, to obtain the final status of an asynchronous I/O operation once it has completed ( aio_error(2) returns something other than EINPROGRESS).

RETURN VALUES

If the asynchronous I/O request has completed, the status is returned as described in read(2), write(2), or fsync(2). Otherwise, aio_return() returns -1 and sets errno to indicate the error condition.

ERRORS

The aio_return() system call will fail if:
[ EINVAL]
The iocb argument does not reference a completed asynchronous I/O request.

STANDARDS

The aio_return() system call is expected to conform to the IEEE Std 1003.1 (“POSIX.1”) standard.

HISTORY

The aio_return() system call first appeared in FreeBSD 3.0.

AUTHORS

This manual page was written by Wes Peters <wes@softweyr.com>.
October 7, 2006 FreeBSD